<template>
    <div>
        <!-- 顶部滑动跳 -->
        <div id="slider" class="mui-slider">
				<div id="sliderSegmentedControl" class="mui-scroll-wrapper mui-slider-indicator mui-segmented-control mui-segmented-control-inverted">
					<div class="mui-scroll">
						<a :class="['mui-control-item',item.id = 0 ? ' mui-active' : '']" v-for="item in cates" :key="item.id" @click="getPhotoListCateId(item.id)">
							{{item.title}}
						</a>
					</div>
				</div>

			</div>

		<!-- 图片列表区域 -->
		<ul class="photo-list">
  			<router-link v-for="item in list" :key="item.id" :to="'/home/photoinfo/'+item.id" tag="li">
    			<img v-lazy="item.img_url">
					<div class="info">
						<h1 class="info-title">{{item.title}}</h1>
						<div class="info-body">{{item.zhaiyao}}</div>
					</div>
  			</router-link>
		</ul>

    </div>
</template>

<script>
//导入mui的js文件
import mui from "../../lib/mui/js/mui.min.js";

export default {
  data() {
    return {
      cates: [], //所有分类拼接保存
      list: [] //图片列表
    };
  },
  created() {
    this.getAllCategory();
    //默认进入页面,就主动
    this.getPhotoListCateId(0);
  },
  mounted() {
    //当组件中DOM结构渲染到页面中
    //初始化滑动控件
    mui(".mui-scroll-wrapper").scroll({
      deceleration: 0.0005 //flick 减速系数，系数越大，滚动速度越慢，滚动距离越小，默认值0.0006
    });
  },
  methods: {
    getAllCategory() {
      //获取所有图片分类
      this.$http.get("api?type=getimgcategory").then(result => {
        if (result.body.status === 0) {
          //手动拼接分类
          result.body.message.unshift({ title: "全部", id: 0 });
          this.cates = result.body.message;
        }
      });
    },
    getPhotoListCateId(cateId) {
      //根据分类id获取图片
      this.$http.get("api?type=getimages&cateid=" + cateId).then(result => {
        if (result.body.status === 0) {
          this.list = result.body.message;
        }
      });
    }
  }
};
</script>

<style lang="scss" scoped>
* {
  touch-action: pan-y;
}
.photo-list {
  list-style: none;
  margin: 0;
  padding: 10px;
  padding-bottom: 0;
  li {
    background-color: #ccc;
    text-align: center;
    margin-bottom: 10px;
    box-shadow: 0 0 9px #999;
    position: relative;
    img {
      width: 100%;
      vertical-align: middle;
    }
    img[lazy="loading"] {
      width: 40px;
      height: 300px;
      margin: auto;
    }

    .info {
      color: white;
      text-align: left;
      position: absolute;
      bottom: 0;

      background-color: grba(0, 0, 0, 0.4);
      max-height: 84px;
      .info-title {
        font-size: 14px;
      }
      .info-body {
        font-size: 13px;
      }
    }
  }
}
</style>
